<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片 -->
    <el-card>
      <!-- 提示区域 -->
      <el-alert title="添加商品信息" type="info" center show-icon> </el-alert>
      <el-steps
        :space="200"
        :active="active - 0"
        finish-status="success"
        align-center
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          :tab-position="'left'"
          v-model="active"
          :before-leave="beforTabLeave"
          @tab-click="tabClicked"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight" type="number">
              <el-input v-model="addForm.goods_weight"></el-input>
            </el-form-item>

            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <!-- 级联选择器 -->
            <el-form-item label="商品分类">
              <el-cascader
                v-model="addForm.goods_cat"
                :options="catelist"
                :props="{ expandTrigger: 'hover', ...cateProps }"
                @change="handleChange"
              ></el-cascader
            ></el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <!-- 渲染表单的item项 -->
            <el-form-item
              :label="item.attr_name"
              v-for="item in manyTableData"
              :key="item.attr_id"
            >
              <!-- 复选框组 -->
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  border
                  :label="item"
                  v-for="(item, i) in item.attr_vals"
                  :key="i"
                  >{{ item }}</el-checkbox
                >
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              :label="item.attr_name"
              v-for="item in onlyTableData"
              :key="item.attr_id"
            >
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <!-- action:图片上传后台API地址 -->
            <el-upload
              :action="uploadURL"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              :headers="headersObj"
              list-type="picture"
              :on-success="handleSuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
              <div slot="tip" class="el-upload__tip">
                只能上传jpg/png文件，且不超过500kb
              </div>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <!-- 富文本编辑器组件 -->
            <quill-editor v-model="addForm.goods_introduce"></quill-editor> 
            <el-button type="primary" class="btnAdd" @click="add">
              添加商品
            </el-button>
            </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <!-- 预览图片对话框 -->
    <el-dialog
      title="预览图片"
      :visible.sync="previewVisible"
      width="50%"
       
    >
      
      <img :src="previewPath" alt="" class="preview">
      </span>
    </el-dialog>
  </div>
</template>

<script>
import _ from 'lodash'
export default {
  data() {
    return {
      active: '0',
      //添加商品表单数据对象
      addForm: {
         goods_name: '',
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        // 商品所属的分类数组
        goods_cat: [],
        // 图片的数组
        pics: [],
        // 商品的详情描述
        goods_introduce: '',
        attrs: []
      },
      addFormRules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' },
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' },
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' },
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' },
        ],
        goods_cat: [
          { required: true, message: '请输入商品分类', trigger: 'blur' },
        ],
      },
      // 商品分类列表
      catelist: [],
      cateProps: {
        label: 'cat_name',
        value: 'cat_id',
        children: 'children',
      },
      // 动态参数列表数据
      manyTableData: [],
      // 静态属性列表数据
      onlyTableData: [],
      // 后台API图片上传地址
      uploadURL: 'http://127.0.0.1:8888/api/private/v1/upload',
      headersObj: {
        Authorization: window.sessionStorage.getItem('token'),
      },
      // 图片预览
      previewPath: '',
      previewVisible:false
    }
  },

  methods: {
    //获取所有商品分类
    async getCateList() {
      const { data: res } = await this.$http.get('categories')

      if (res.meta.status !== 200) {
        return this.$message.error('获取数据失败')
      }

      this.catelist = res.data
      // console.log(this.catelist)
    },

    //级联选择器变化时
    handleChange() {
      console.log(this.addForm.goods_cat)
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = []
      }
    },
    beforTabLeave(avtiveName, oldAvtiveName) {
      if (oldAvtiveName === '0' && this.addForm.goods_cat.length !== 3) {
        this.$message.error('请先选择商品分类')
        return false
      }
    },
    async tabClicked() {
      // 证明访问的是动态列表
      if (this.active === '1') {
        // console.log('动态参数')
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: 'many' },
          }
        )
        if (res.meta.status !== 200) {
          return this.$message.error('获取动态列表失败!')
        }
   
        res.data.forEach(
          (item) =>
            (item.attr_vals =
              item.attr_vals.length === 0 ? [] : item.attr_vals.split(' '))
        )
        // console.log(res)
        this.manyTableData = res.data
      }
      // 静态属性
      else if (this.active === '2') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: 'only' },
          }
        )
        if (res.meta.status !== 200) {
          return this.$message.error('获取动态列表失败!')
        }
        // console.log(res.data)
        this.onlyTableData = res.data
      }
    },
    // 图片预览效果
    handlePreview(file) {
      this.previewPath=file.response.data.url
      this.previewVisible=true
    },
    // 移除图片操作
    handleRemove(file) {
      // console.log(file)
      const filePath = file.response.data.tmp_path
      const i = this.addForm.pics.findIndex((x) => x.pic === filePath)
      this.addForm.pics.splice(i, 1)
      // console.log(this.addForm)
    },
    // 图片上传成功时
    handleSuccess(response) {
      const picInfo = {
        pic: response.data.tmp_path,
      }
      this.addForm.pics.push(picInfo)
    },
     add(){
      this.$refs.addFormRef.validate(async valid=>{
          if (!valid) {
          return this.$message.error('请填写必要的表单项')
        }
        // 执行添加的业务逻辑
        const form = _.cloneDeep(this.addForm)
        form.goods_cat = form.goods_cat.join(',')
            // 处理动态参数
        this.manyTableData.forEach(item => {
          const newInfo = { attr_id: item.attr_id, attr_vals: item.attr_vals }
          this.addForm.attrs.push(newInfo)
        })
        // 处理静态参数
        this.onlyTableData.forEach(item => {
          const newInfo = { attr_id: item.attr_id, attr_vals: item.attr_vals }
          this.addForm.attrs.push(newInfo)
        })
        form.attrs = this.addForm.attrs
        // console.log(form);
        //发起请求
        //商品名称必须是唯一的
        const { data: res } = await this.$http.post('goods', form)
        if (res.meta.status!==201) {
          return this.$message.error('添加失败!')
        }
        this.$message.success('添加成功')
        this.$router.push('/goods')
        
      })
    }
  },

  created() {
    this.getCateList()
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2]
      }
      return null
    },
  },
}
</script>

<style lang="less" scoped>
.el-steps {
  margin: 30px;
}
.el-step__title {
  font-style: 13px;
}
.el-checkbox {
  margin: 0 10px 0 0 !important;
}
.preview{
  width: 100%;
}
.btnAdd{
  margin-top: 15px;
}
</style>
